Enlarge Image Diabetic? Dolphins can harbor a condition strikingly similar to type-2 diabetes in humans. Credit: Brian Balmer, Sarasota Dolphin Research Program SAN DIEGO—The best nonhuman model for type 2 diabetes is not a rat or even a primate. It’s a dolphin, researchers suggested at a press conference here this morning at the annual meeting of the American Association for the Advancement of Science (which publishes ScienceNOW). Apparently, these marine mammals regularly shift their blood chemistry in a way that can cause problems strikingly similar to those associated with diabetes in humans, such as insulin resistance, excess iron, and...